Fetching this spot's conditions…
Tip of the moment
Fetching this spot's conditions…
Tip of the moment
Guissény · Bretagne
Today's take
Swimming prohibited
Water temperature
16.4 °C
Verdict
Swimming banned
Underwater visibility
~8.8 m
satellite reading from 3 days ago
When to go
No favorable window that day.
Swimming prohibited
Pin colours:swimmablecautionnot advisedconditions not loaded yet
Forecasts come from ~8 km resolution models: very local effects (a sheltering pier, a lagoon pass) are not captured.
Sea-state data comes from a marine model cell about 8.6 km from this point — local nearshore conditions can differ.
The sea state is read as close to the beach as the model allows, without our having verified that this water is the water at the shore (indented coast, ria, head of a bay). Take it as an order of magnitude: what comes in from open sea may not reach this far.
Wave heights are significant heights: individual waves up to 2× this height still occur.
Four wave models are compared for this point: EWAM, GWAM, Météo-France WAM and ECMWF WAM.
Tide times derived from modelled sea level (± a few tens of minutes) — not official tide tables.
Missing data is shown as missing — never silently estimated.
Beach locations from OpenStreetMap — © OpenStreetMap contributors (ODbL).
Weather and marine data: Open-Meteo.com (CC BY 4.0), wave models from the Deutscher Wetterdienst (CC BY 4.0). Forecasts are not guarantees. · Data fetched at 22:18 UTC
Water clarity generated using E.U. Copernicus Marine Service Information.
Windows, comfort score and verdicts are computed by oswim from this data — modified values, not the institutes' raw figures.
min 3 · max 24 km/h · north sector · gusts 42 km/h
Thunderstorm · None forecast
No thunderstorms forecast.
World Triathlon: stop on lightning
Offshore wind · 3 – 27 km/h
No wind-driven offshore drift.
RNLI / lifeguard warning · measured drift (coastguard): 2–4 % of the wind · Beaufort scale
Visibility · 3 – 37 km
Good visibility.
Loss of bearings and collision risk
Jellyfish: no recent info. If you're there, tell us what you see — even “none” helps the next swimmer.
In all cases: bright swim cap and tow float so boats can see you.
Consolidated ladder: World Aquatics / World Triathlon / FFTri rules + manufacturer thermal guides
Depths from the global GEBCO grid (~450 m cells), stated without the tide: coarser than along European coasts, they say how it drops away offshore rather than what is under your feet. Never a navigation aid.
Do you know whether this beach is lifeguarded?
Nearest lifeguarded beach: (1.8 km).
Usually reached via the coastal paths of Guissény, on foot from the village outskirts.
Worth knowing
The rocks and shoreline of La Croix host a quiet but rich marine life, from periwinkles and limpets to burrowing shellfish like cockles, evidence of a coastline that has remained largely unspoiled.
Spot profile pending on-site verification.